Hair-clipping machine



J. K. PRIEST.

HAIR OLIPPING MACHINE.

(Model.)

No. 350,991. Patented Oct. 19, 1886.

Wotnesses:

N, PETERS Pmmumu m her. washin hm D. cv

UNITED STATES PATENT OFEICE.

JOSEPH KILBURN PRIEST, OF NASHUA, NEXV HAMPSHIRE.

HAIR-CLIPPING MACHINE.

SPECIFICATION forming part of Letters Patent No. 350,991, dated October 19, 1886.

Application filed April 29, 1886. Serial No. 200,597.

To a. whom it may concern.-

Be it known that I, J osEPH KILBURN PRIEs'r, a citizen of the United States, residing at Nashua, in the county of Hillsborough and State of New Hampshire, have invented certain new and useful Improvements in Hair- Olipping Machines; and I do hereby declare the following to be a full, clear, and exact description of the invent-ion, such as will enable others skilled in the art to it which appertains to make and use the same.

My invention consists in certain novel constructions and combinations of parts in a hairclipping machine, as will be hereinafter de scribed, and pointed out in the claims.

In the accompanying drawings, Figure l is a top View of my improved hairclipper complete. Fig. 2 is also a top view, but with the outer portions of the handles broken away and some of the upper parts removed in order to show the construction of the partsbelow. Fig. 8 is a side elevation of the machine as shown in Fig. 1. Fig. at is a back view of the same, with the handles partly broken away. Fig. 5 is a vertical section in the line a: .1; of Fig. 1, the handles being partly broken away. Fig. l 6 is a perspective view of the presserplate of i the clipper, and Fig. 7 is a perspective view of the same inverted. Fig. Sis a perspective view of the spring bridge-plate used above the presser-plate of the clipper. Fig. 9 is an en.- larged sectional view showing the self-locking clamping device detached from the machine. Fig. 10 is a horizontal section in the line .0 of Fig. 9, and Fig. 11 is a horizontal section in the line 1 y of Fig. 9.

The letter A in the drawings represents a lower stationary toothed cutter-plate; B, an upper toothedsliding or reciprocating cutterplate; 0 and D, handles; E, a presser-plate; F, a bridge-spring plate, and G a clamp device.

The cutter-plate A has comb-shaped cutting-teeth a, and is attached to the handle 0, as will be seen. This handle 0 is provided with a thumb-loop, c, thumb-horn c, and rest 0 of substantially the same construct-ion as shown in my United States PatentNo. 317,671.

At the fulcrum of the handles 0 and D a cylindrical housing, 0, is formed on the handie 0, which housing has a closed top and a central tubular bearing, 0, and by this con- (Model struction an annular space, 0", is formed, into which a spiral spring, H, is inserted. The upper end, h, Fig. 3, of this spring is inserted into and held by a slot, 0", of the said housing. Two lugs, 0 are provided at the foot of the housing, and are fastened by means of headed screws a to the cutter-plate A, thus firmly uniting it with the handle 0. The lugs a are respectively set off laterally from the handle C and the housing on the right and left sides of the fulcrum of the said handle, so as to provide room for the handle D, as shown in the drawings. A tubular bearing, (1, is formed on a horizontal portion, d, of the handle D, and fitted on a screw-pin or bolt, g, which has its lower or head end, 9, fitted into cutter-plate A, and secured thereby longitudinally,while it is laterally secured by means of a key, a". This bolt is thus made to serve as the fulcrum for the handle D. The tubular bearing d, by being fitted into the tubular.

bearing 0* of the handle 0, becomes a support therefor, while it also serves for stead ying the movement of the handle D.

The handle D is provided with aiingerloop, d, and a forefinger-stop, d, the same as in my Patent No. 317,67i; but to the outer termination of the finger-loop a curved. rest, (2, is added, which. renders the manipulation of the hair-clippcr more convenient than the loop alone for certain operations of hair-cutting. Near the fulcrum. of the handles a notch, d, is provided on the handle 1), into which notch the lower end, It, of the springH is inserted, whereby the handle D is held away from the handle C. Instead of forming a notch, as d, aprojection maybe provided for holding the spring. The horizontal flat portion (1 of said handle is fitted beneath and between the housing 1;" and a loose washer, a, next to the cutter-plate A, andit is allowed to move freely sidewise between the lugs (F to the requisite extent for cutting. Said handle is also provided with an eccentricallyacting lug, (P, which moves with a snug lateral lit in a notch, I), of the upper cutter-plate, 1B. The upper cutter-plate, *l, is provided with cutters I), similar to the cutters a, and with transverse guide-slots b", into which latter guide-pins a, suitably provided on the cutter-plate A, are fitted, so as to produce a rectilinear motion of the cutter-plate B, parallel with the cutters er-plate, which fit the round portions of the lugs, and are held laterally in position by two angular projections, of the said lugs, inasmuch as they are tightly fitted between the end surfaces of the flanges 0 The presserplate E is also provided with an opening, 0, which fits the outer surface of the housing 0",

and thus, together with the opposite fit of the curved flanges c" on the lugs 0 longitudinal motion of said plate is rendered impossible. Upon the front portion of the presser-plate, and extending nearly across the same, the triangular bridge-spring plate F rests by means of its vertical flange f. The rear portion of the bridge-spring plate F is provided with a lug or pin,f, which rests in a shallow recess, 0, formed in the handle 0. About its center the bridge-spring plate F is provided with hole f, through which the upper extended end of the screw-bolt 9 passes. The screw-thread of the bolt 9 is extended above the bridge-spring plate to the end of the bolt, and a nut, 1 and washer 9 Figs. 3, 4-, 5, and 10, are applied thereon, as shown. The nut g is cylindrical, and is provided with either a tubular or solid milled head, 9, and

a body which has longitudinal slots termiin a thinned anmilarly-grooved portion, g, of the body 9. The lower end surface, of the nut is either spherical or conical, and rests in either a spherical or conical depression, of the washer g. The depression 9" of the washer being more elongated or pointed than the surface g of the nut, the slotted portion of the nut will become compressed around the bolt when the nut is screwed down sufliciently into the washer, and will thus be caused to grip the bolt very tightly and to become locked thereon so securely that it is not liable to become loosened during the operation of the hairclipper, no matter how closely the'two cutterplates are clamped together by the clamping device. The radial holes 9 and groove 9 render the slotted portion of the nut sufficiently elastic to insure an expansion of the body portion of the nut away from the screw-bolt g as soon as the nut is turned back far enough to clear the washer. The exterior surface, 9, of the washer is made spherical or conical,v in order to secure a central pressure and avoid one sided or unequal bearing upon the bridge spring plate.

In the described hainclipper I have provided a clamping device which is very effective, quick, and permanent. Eifective, inasmuch as the pressure of the flange f equally distributes itself from end to end across the presser-plate, this being due to the fact that the pin f and flange form a triangular bridgespring, and the force of the screw-bolt is applied through washer g about centrally of the pin and flange f, and the washer, having no flat bearing on the spring-plate, will exert no more pressure on one side than onthe other should the spring-plate yield unequally, and quick and permanent on account of the elampscrew being in the center and provided with a self-locking thumb-button nut, which by one movement will effect the desired adjustment and become locked without the use of awrench. Ihave also provided, by the construction shown,for the insertion of a largerand more powerful spring,H, in a comparatively convenient manner. use of extra belts or screws for holding the presser-plate is dispensed with, and pressure upon the cutter-plates is rendered so yielding that the cutters are saved from the danger of being broken should any unyielding substance accidentally get between them during the operation of the hair-clipper, said cutter-plates under such circumstances parting from each other so that the obstructions between them can be removed by the operator. The construction is also such that the spring-plate, presser-plate, and upper cutter-plate can be removed and replaced without disturbing the spiral spring H, and whenever the operating parts become worn the washer a can be exchanged fora thicker one in order to avoid loose fitting of the handle D.

\Vhat I claim is 1. The combination of the clamping and pressure screw-bolt g, fastened to and projecting up from the stationary cutter-plate A, the slotted nut g", and the concave or conical washer g, with the movablecutter-plate B, presser-plate E, bridge-spring plate F, and stationary cutter-plate A, substantially as and for the purpose described.

2. The handle 0, provided with the housing 0", having the flanges c annular chamber 0 for the spring H, and tubular bearing 0, all fastened to the stationary cutter-plate A, in combination with the movable handle D, having a tubularv bearing, d, with horizontal flat portion (1, upon which the tubular bearing 0 bears, substantially as described.

3. The combination, with the handle 0, of the housing 0, comprising chamber 0, tubular bearing 0, and outer slot, 0", the handle D, having notch d", and the spring H, having upper end, h, and lower end, h, substantially as and for the purpose described.

4. The combination of the housing a, forming a tubular bearing, 0', for the tubular bearing (1, and the chamber 0" for the spring H, the handle D,- having the tubularbearing (1", which is open at both its lower and upper ends, and is provided with the flat portion (1, the cutter-plates A and B, screw-bolt extended up through and above the bearing (1, the prcsser-plate E, the bridge-spring F, and a suitable pressure device applied on the bolt The In testimony whereof I affix my signature in IQ presence of two witnesses.

g, substantially as described and for the purl pose set forth. I

In a hair-clipping machine, the combination of the presser-plate E, having flanges I JOSEPH KILBURN PRIEST. e 6 ledges e. and opening a", the handle 0, I

having lugs 0 with projections e and the \Vitnesses:

housing 0, having chamber a for the spring K. T. SMITH, H, substantially as aml for the purpose de- S. J. M. SMITH. serihecl. 

